Firearm hammer



FIG. 1 is a front left isometric view of the firearm hammer.

FIG. 2 is a left side view of the firearm hammer.

FIG. 3 is a right side view of the firearm hammer.

FIG. 4 is a front view of the firearm hammer.

FIG. 5 is a rear view of the firearm hammer.

FIG. 6 is a top view of the firearm hammer; and,

FIG. 7 is a bottom view of the firearm hammer.

Broken lines in the Figures show environmental structure or boundaries of the claim, with the broken lines themselves forming no part of the claimed design. 

CLAIM The ornamental design for a firearm hammer, as shown and described. 